Dr. Landini at HEAL at 4108 N Rockwell, Just west of Western Ave and just north of Irving Park Rd. I've been taking my animals to Dr. Landini for more than 20 years and he is one of the best vets ever, and I've known a lot in my days (I'm old!) He's been a vet for over 30 years and he is in incredible surgeon too so he knows animals inside out so to speak. He saved one of my cats 3 times who should not have survived as long as she did (she was a runt and born w kidney issues) He is simply amazing. He has also come to my home sadly but thankfully for my last 3 babies who needed to go to rainbow bridge. He is the most dedicated Vet I've ever known. I will not see anyone else.
I also recommend Dr. Duke at Duke's Animal Hospital. The staff is very upfront about costs which I appreciate. (They even warned me about what costs to anticipate for future puppy visits.) I can get same-day appointments and the staff can communicate via text, email, or phone based on your preference. Above all, my two doggies love it there and that's really all that matters!